Here is the full list of all 28 Organ Trail: Director's Cut achievements.
Beat the game without trading anything on the road.
Your party dead, you made it to Safe Heaven alone.
Put down an infected party member who has passed out.
Always choose to shoot your way through zombie hoardes.
Find your own grave.
Kill "Ryan" at the start of a game.
Kill all the other members of your party while they are healthy.
Don't pull the trigger
Make it to Safe Heaven without starting with any food or buying any food.
Make it to Safe Heaven without starting with any money or selling anything.
Have $1000 on you.
Fully upgrade your station wagon.
Scavenge more than double the supplies you can carry.
Kill 500 zombies
Successfully forde a horde of zombies 3 times.
Get attacked by zombies 20 times during scavenging.
Kill 25 zombies without missing a shot.
Stop at 50 tombstones.
Beat the game on hard.
The station wagon breaks down 4 times during the trip.
Make it to Safe Haven with George Romero in your party.
[Secret] sacrifices himself for the greater good.
Survive all 3 boss encounters.
Investigate 30 points of interest.
Use 50 medkits
Someone died of dysentery.
Become a zombie.
Beat the game five times.